title: Integrated first- and second-trimester Down syndrome screening test among unaffected IVF pregnancies.
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood; D004314:Down Syndrome / Q000175:diagnosis* / Q000196:embryology; D004964:Estriol / Q000097:blood; D005189:False Positive Reactions; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007265:Inhibins / Q000097:blood; D008137:Longitudinal Studies; D009098:Multiphasic Screening; D009333:Neck / Q000002:abnormalities; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011266:Pregnancy-Associated Plasma Protein-A / Q000032:analysis*; D011296:Prenatal Diagnosis; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D006063:Chorionic Gonadotropin; D000509:alpha-Fetoproteins; C422362:inhibin A; D007265:Inhibins; D011266:Pregnancy-Associated Plasma Protein-A; D004964:Estriol